Chatham, Ontario, Canada Climate Change Severity

48
High
The current climate change severity in Chatham is High, with a 4.8% improvement in the climate score compared to last 15 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Oct. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Chatham Weather Condition Changes (Historic Vs 2025)

2025
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2025

Over the past 15 year(s), Chatham temperature has changed by around +0.09%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Oct. (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
4621
-54.3%
cloudyCloudy
7763
-18.1%
rainyRainy
12471
-42.7%
snowySnowy
89
12.5%
mistyMisty
018
100%

Disclaimer: Other weather conditions not shown may affect the total day count.

Climate Change Indicators:

Over the past 15 years, Chatham has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (within the High severity category). While the score remains High, certain factors have improved over time. Here’s a breakdown of the specific changes observed:

Severity Score

48/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Chatham experienced significant changes:

Temperature change of

+0.01 °C

Variation in annual rainfall

+32.9 %

Change in average humidity

-0.7 %

PM2.5 levels surged by

-10.3 %

Heatwave changed by

+1.5 day(s)

Coldwave changed by

-7.2 day(s)

Wind speeds changed by

+0.6 km/h

These indicators show improvement in key parametes of climate, but Chatham remains in the High severity category. Continuous focus on climate resilience is necessary to avoid further worsening and ensure sustainability.

Check how we calculate Climate Change Severity
Based on data from Jan. to Oct.

Chatham Weather Forecast 30 Days (November - December 2025)
Chatham, Ontario, Canada

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Wed. 5, Nov.
overcastOvercast
Temperature Icon12°/6°
Humidity Icon76%
Wind Icon42km/h
Thu. 6, Nov.
sunnySunny
Temperature Icon9°/1°
Humidity Icon73%
Wind Icon22km/h
Fri. 7, Nov.
moderate rainModerate rain
Temperature Icon10°/7°
Humidity Icon82%
Wind Icon32km/h
Sat. 8, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon7°/3°
Humidity Icon70%
Wind Icon23km/h
Sun. 9, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon2°/-1°
Humidity Icon83%
Wind Icon34km/h
Mon. 10, Nov.
partly cloudyPartly Cloudy
Temperature Icon4°/-2°
Humidity Icon69%
Wind Icon32km/h
Tue. 11, Nov.
partly cloudyPartly Cloudy
Temperature Icon5°/1°
Humidity Icon65%
Wind Icon27km/h
Wed. 12, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon7°/4°
Humidity Icon77%
Wind Icon34km/h
Thu. 13, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon5°/1°
Humidity Icon75%
Wind Icon28km/h
Fri. 14, Nov.
sunnySunny
Temperature Icon5°/0°
Humidity Icon69%
Wind Icon22km/h
Sat. 15, Nov.
patchy rain possiblePatchy rain nearby
Temperature Icon7°/2°
Humidity Icon69%
Wind Icon33km/h
Sun. 16, Nov.
moderate rainModerate rain
Temperature Icon4°/0°
Humidity Icon85%
Wind Icon30km/h
Mon. 17, Nov.
sunnySunny
Temperature Icon3°/-1°
Humidity Icon71%
Wind Icon21km/h
Tue. 18, Nov.
sunnySunny
Temperature Icon5°/-1°
Humidity Icon67%
Wind Icon24km/h
Wed. 19, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/1°
Humidity Icon74%
Wind Icon28km/h
Thu. 20, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon74%
Wind Icon29km/h
Fri. 21, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon78%
Wind Icon28km/h
Sun. 23, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/0°
Humidity Icon76%
Wind Icon26km/h
Mon. 24, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon77%
Wind Icon25km/h
Tue. 25, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/2°
Humidity Icon79%
Wind Icon25km/h
Wed. 26, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon78%
Wind Icon26km/h
Thu. 27, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon79%
Wind Icon27km/h
Fri. 28, Nov.
heavy rain at timesHeavy rain at times
Temperature Icon4°/0°
Humidity Icon72%
Wind Icon26km/h
Sat. 29, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon78%
Wind Icon27km/h
Sun. 30, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon83%
Wind Icon27km/h
Mon. 1, Dec.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon82%
Wind Icon26km/h
Tue. 2, Dec.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/1°
Humidity Icon78%
Wind Icon24km/h
Wed. 3, Dec.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon81%
Wind Icon24km/h
Thu. 4, Dec.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/0°
Humidity Icon76%
Wind Icon28km/h
Fri. 5, Dec.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/-1°
Humidity Icon73%
Wind Icon26km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onWed. 5, Nov.

11.9°C

Low will be onMon. 10, Nov.

-2°C

HumidityHumidity

High will be onSun. 16, Nov.

85%

Low will be onTue. 11, Nov.

65%

Wind SpeedWind Speed

High will be onWed. 5, Nov.

42.1km/h

Low will be onMon. 17, Nov.

20.9km/h

PrecipitationPrecipitation

High will be onFri. 7, Nov.

12.3mm

Low will be onMon. 17, Nov.

0.01mm

Ultraviolet IndexUV

High will be onMon. 10, Nov.

2

Low will be onThu. 13, Nov.

1

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